﻿function gel(cid) {
    return document.getElementById(cid);
}

function createXmlHttp() {//创建xhr对象
    var xhobj = false;
    try {
        xhobj = new ActiveXObject("Msxml2.XMLHTTP"); // ie msxml3.0+
    } catch (e) {
        try {
            xhobj = new ActiveXObject("Microsoft.XMLHTTP"); //ie msxml2.6
        } catch (e2) {
            xhobj = false;
        }
    }
    if (!xhobj && typeof XMLHttpRequest != 'undefined') {// Firefox, Opera 8.0+, Safari
        xhobj = new XMLHttpRequest();
    }
    return xhobj;
}
